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<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (c) 2004-2013 QOS.ch, Copyright (C) 2015 Google Inc.<a name="line.2"></a>
<span class="sourceLineNo">003</span> * All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * Permission is hereby granted, free  of charge, to any person obtaining<a name="line.5"></a>
<span class="sourceLineNo">006</span> * a  copy  of this  software  and  associated  documentation files  (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "Software"), to  deal in  the Software without  restriction, including<a name="line.7"></a>
<span class="sourceLineNo">008</span> * without limitation  the rights to  use, copy, modify,  merge, publish,<a name="line.8"></a>
<span class="sourceLineNo">009</span> * distribute,  sublicense, and/or sell  copies of  the Software,  and to<a name="line.9"></a>
<span class="sourceLineNo">010</span> * permit persons to whom the Software  is furnished to do so, subject to<a name="line.10"></a>
<span class="sourceLineNo">011</span> * the following conditions:<a name="line.11"></a>
<span class="sourceLineNo">012</span> *<a name="line.12"></a>
<span class="sourceLineNo">013</span> * The  above  copyright  notice  and  this permission  notice  shall  be<a name="line.13"></a>
<span class="sourceLineNo">014</span> * included in all copies or substantial portions of the Software.<a name="line.14"></a>
<span class="sourceLineNo">015</span> *<a name="line.15"></a>
<span class="sourceLineNo">016</span> * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,<a name="line.16"></a>
<span class="sourceLineNo">017</span> * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF<a name="line.17"></a>
<span class="sourceLineNo">018</span> * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND<a name="line.18"></a>
<span class="sourceLineNo">019</span> * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE<a name="line.19"></a>
<span class="sourceLineNo">020</span> * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION<a name="line.20"></a>
<span class="sourceLineNo">021</span> * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION<a name="line.21"></a>
<span class="sourceLineNo">022</span> * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.<a name="line.22"></a>
<span class="sourceLineNo">023</span> */<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>package org.slf4j.helpers;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>import static org.junit.Assert.assertEquals;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import static org.junit.Assert.assertFalse;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import static org.junit.Assert.assertNull;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import static org.junit.Assert.fail;<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.lang.Thread.UncaughtExceptionHandler;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.util.Map;<a name="line.33"></a>
<span class="sourceLineNo">034</span><a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.junit.After;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.junit.Test;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.slf4j.spi.MDCAdapter;<a name="line.37"></a>
<span class="sourceLineNo">038</span><a name="line.38"></a>
<span class="sourceLineNo">039</span>/**<a name="line.39"></a>
<span class="sourceLineNo">040</span> * Tests for {@link BasicMDCAdapter}<a name="line.40"></a>
<span class="sourceLineNo">041</span> * <a name="line.41"></a>
<span class="sourceLineNo">042</span> * @author Lukasz Cwik<a name="line.42"></a>
<span class="sourceLineNo">043</span> */<a name="line.43"></a>
<span class="sourceLineNo">044</span>public class BasicMDCAdapterTest {<a name="line.44"></a>
<span class="sourceLineNo">045</span>    MDCAdapter mdc = new BasicMDCAdapter();<a name="line.45"></a>
<span class="sourceLineNo">046</span><a name="line.46"></a>
<span class="sourceLineNo">047</span>    @After<a name="line.47"></a>
<span class="sourceLineNo">048</span>    public void tearDown() throws Exception {<a name="line.48"></a>
<span class="sourceLineNo">049</span>        mdc.clear();<a name="line.49"></a>
<span class="sourceLineNo">050</span>    }<a name="line.50"></a>
<span class="sourceLineNo">051</span><a name="line.51"></a>
<span class="sourceLineNo">052</span>    @Test<a name="line.52"></a>
<span class="sourceLineNo">053</span>    public void testSettingAndGettingWithMDC() {<a name="line.53"></a>
<span class="sourceLineNo">054</span>        assertNull(mdc.get("testKey"));<a name="line.54"></a>
<span class="sourceLineNo">055</span>        mdc.put("testKey", "testValue");<a name="line.55"></a>
<span class="sourceLineNo">056</span>        assertEquals(mdc.get("testKey"), "testValue");<a name="line.56"></a>
<span class="sourceLineNo">057</span>    }<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span>    @Test<a name="line.59"></a>
<span class="sourceLineNo">060</span>    public void testOverwritingAKeyInMDC() {<a name="line.60"></a>
<span class="sourceLineNo">061</span>        assertNull(mdc.get("testKey"));<a name="line.61"></a>
<span class="sourceLineNo">062</span>        mdc.put("testKey", "testValue");<a name="line.62"></a>
<span class="sourceLineNo">063</span>        mdc.put("testKey", "differentTestValue");<a name="line.63"></a>
<span class="sourceLineNo">064</span>        assertEquals(mdc.get("testKey"), "differentTestValue");<a name="line.64"></a>
<span class="sourceLineNo">065</span>    }<a name="line.65"></a>
<span class="sourceLineNo">066</span><a name="line.66"></a>
<span class="sourceLineNo">067</span>    @Test<a name="line.67"></a>
<span class="sourceLineNo">068</span>    public void testClearingMDC() {<a name="line.68"></a>
<span class="sourceLineNo">069</span>        mdc.put("testKey", "testValue");<a name="line.69"></a>
<span class="sourceLineNo">070</span>        assertFalse(mdc.getCopyOfContextMap().isEmpty());<a name="line.70"></a>
<span class="sourceLineNo">071</span>        mdc.clear();<a name="line.71"></a>
<span class="sourceLineNo">072</span>        assertNull(mdc.getCopyOfContextMap());<a name="line.72"></a>
<span class="sourceLineNo">073</span>    }<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
<span class="sourceLineNo">075</span>    @Test<a name="line.75"></a>
<span class="sourceLineNo">076</span>    public void testGetCopyOfContextMapFromMDC() {<a name="line.76"></a>
<span class="sourceLineNo">077</span>        mdc.put("testKey", "testValue");<a name="line.77"></a>
<span class="sourceLineNo">078</span>        Map&lt;String, String&gt; copy = mdc.getCopyOfContextMap();<a name="line.78"></a>
<span class="sourceLineNo">079</span>        mdc.put("anotherTestKey", "anotherTestValue");<a name="line.79"></a>
<span class="sourceLineNo">080</span>        assertFalse(copy.size() == mdc.getCopyOfContextMap().size());<a name="line.80"></a>
<span class="sourceLineNo">081</span>    }<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span>    @Test<a name="line.83"></a>
<span class="sourceLineNo">084</span>    public void testMDCInheritsValuesFromParentThread() throws Exception {<a name="line.84"></a>
<span class="sourceLineNo">085</span>        mdc.put("parentKey", "parentValue");<a name="line.85"></a>
<span class="sourceLineNo">086</span>        runAndWait(new Runnable() {<a name="line.86"></a>
<span class="sourceLineNo">087</span>            public void run() {<a name="line.87"></a>
<span class="sourceLineNo">088</span>                mdc.put("childKey", "childValue");<a name="line.88"></a>
<span class="sourceLineNo">089</span>                assertEquals("parentValue", mdc.get("parentKey"));<a name="line.89"></a>
<span class="sourceLineNo">090</span>            }<a name="line.90"></a>
<span class="sourceLineNo">091</span>        });<a name="line.91"></a>
<span class="sourceLineNo">092</span>    }<a name="line.92"></a>
<span class="sourceLineNo">093</span><a name="line.93"></a>
<span class="sourceLineNo">094</span>    @Test<a name="line.94"></a>
<span class="sourceLineNo">095</span>    public void testMDCDoesntGetValuesFromChildThread() throws Exception {<a name="line.95"></a>
<span class="sourceLineNo">096</span>        mdc.put("parentKey", "parentValue");<a name="line.96"></a>
<span class="sourceLineNo">097</span>        runAndWait(new Runnable() {<a name="line.97"></a>
<span class="sourceLineNo">098</span>            public void run() {<a name="line.98"></a>
<span class="sourceLineNo">099</span>                mdc.put("childKey", "childValue");<a name="line.99"></a>
<span class="sourceLineNo">100</span>            }<a name="line.100"></a>
<span class="sourceLineNo">101</span>        });<a name="line.101"></a>
<span class="sourceLineNo">102</span>        assertEquals("parentValue", mdc.get("parentKey"));<a name="line.102"></a>
<span class="sourceLineNo">103</span>        assertNull(mdc.get("childKey"));<a name="line.103"></a>
<span class="sourceLineNo">104</span>    }<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span>    @Test<a name="line.106"></a>
<span class="sourceLineNo">107</span>    public void testMDCChildThreadCanOverwriteParentThread() throws Exception {<a name="line.107"></a>
<span class="sourceLineNo">108</span>        mdc.put("sharedKey", "parentValue");<a name="line.108"></a>
<span class="sourceLineNo">109</span>        runAndWait(new Runnable() {<a name="line.109"></a>
<span class="sourceLineNo">110</span>            public void run() {<a name="line.110"></a>
<span class="sourceLineNo">111</span>                assertEquals("parentValue", mdc.get("sharedKey"));<a name="line.111"></a>
<span class="sourceLineNo">112</span>                mdc.put("sharedKey", "childValue");<a name="line.112"></a>
<span class="sourceLineNo">113</span>                assertEquals("childValue", mdc.get("sharedKey"));<a name="line.113"></a>
<span class="sourceLineNo">114</span>            }<a name="line.114"></a>
<span class="sourceLineNo">115</span>        });<a name="line.115"></a>
<span class="sourceLineNo">116</span>        assertEquals("parentValue", mdc.get("sharedKey"));<a name="line.116"></a>
<span class="sourceLineNo">117</span>    }<a name="line.117"></a>
<span class="sourceLineNo">118</span><a name="line.118"></a>
<span class="sourceLineNo">119</span>    private void runAndWait(Runnable runnable) throws Exception {<a name="line.119"></a>
<span class="sourceLineNo">120</span>        RecordingExceptionHandler handler = new RecordingExceptionHandler();<a name="line.120"></a>
<span class="sourceLineNo">121</span>        Thread thread = new Thread(runnable);<a name="line.121"></a>
<span class="sourceLineNo">122</span>        thread.setUncaughtExceptionHandler(handler);<a name="line.122"></a>
<span class="sourceLineNo">123</span>        thread.start();<a name="line.123"></a>
<span class="sourceLineNo">124</span>        try {<a name="line.124"></a>
<span class="sourceLineNo">125</span>            thread.join();<a name="line.125"></a>
<span class="sourceLineNo">126</span>        } catch (Throwable t) {<a name="line.126"></a>
<span class="sourceLineNo">127</span>            fail("Unexpected failure in child thread:" + t.getMessage());<a name="line.127"></a>
<span class="sourceLineNo">128</span>        }<a name="line.128"></a>
<span class="sourceLineNo">129</span>        assertFalse(handler.getMessage(), handler.hadException());<a name="line.129"></a>
<span class="sourceLineNo">130</span>    }<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span>    /** A {@link UncaughtExceptionHandler} that records whether the thread threw an exception. */<a name="line.132"></a>
<span class="sourceLineNo">133</span>    private static class RecordingExceptionHandler implements UncaughtExceptionHandler {<a name="line.133"></a>
<span class="sourceLineNo">134</span>        private Throwable exception;<a name="line.134"></a>
<span class="sourceLineNo">135</span><a name="line.135"></a>
<span class="sourceLineNo">136</span>        public void uncaughtException(Thread t, Throwable e) {<a name="line.136"></a>
<span class="sourceLineNo">137</span>            exception = e;<a name="line.137"></a>
<span class="sourceLineNo">138</span>        }<a name="line.138"></a>
<span class="sourceLineNo">139</span><a name="line.139"></a>
<span class="sourceLineNo">140</span>        boolean hadException() {<a name="line.140"></a>
<span class="sourceLineNo">141</span>            return exception != null;<a name="line.141"></a>
<span class="sourceLineNo">142</span>        }<a name="line.142"></a>
<span class="sourceLineNo">143</span><a name="line.143"></a>
<span class="sourceLineNo">144</span>        String getMessage() {<a name="line.144"></a>
<span class="sourceLineNo">145</span>            return exception != null ? exception.getMessage() : "";<a name="line.145"></a>
<span class="sourceLineNo">146</span>        }<a name="line.146"></a>
<span class="sourceLineNo">147</span>    }<a name="line.147"></a>
<span class="sourceLineNo">148</span>}<a name="line.148"></a>




























































</pre>
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